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I am looking at how to create my own custom field using a self implemented form field in Joomla 5.

I started my extension in the same way as the core extensions (https://github.com/joomla/joomla-cms/tree/5.0-dev/plugins/fields/) and put my own field in the /src/Field directory of my Extension.

I have also tried to add the path via

FormHelper::addFieldPath(JPATH_PLUGINS . '/' . $this->_type . '/' . $this->_name . '/src/Field');

But my form field does not seem to be found. I think this, because the type is always set to the default text.

I now wanted to do further research. But I can't find the place where the form field is set. I only find a getField() here. But no setField().

Where do I have to look?

Is there perhaps an example of a custom field that uses a self-created form field?

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My attempts so far have ended in code that does not load the form field either.

I have created a question on Github. See: https://github.com/joomla/joomla-cms/discussions/42246

Here I found the solution in

For namespaced field you need to use FormHelper::addFieldPrefix() to register your namespace in the form, instead of FormHelper::addFieldPath(). Example FormHelper::addFieldPrefix('Foo\Bar') for field Foo\Bar\BeerField

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